What is Google PageSpeed Insights and how do I use it to improve my website?
Google PageSpeed Insights (PSI) analyzes your website's performance using real-world data (Chrome User Experience Report from millions of real users) and lab data (Lighthouse synthetic testing). Access at pagespeed.web.dev — enter your URL and receive scores 0-100 for both Mobile and Desktop, plus Core Web Vitals data and specific recommendations. Key sections: Performance score (weighted average of Core Web Vitals), Opportunities (time savings possible), Diagnostics (issues to fix), Passed Audits (what's already good). Priority fixes that give biggest score improvements: eliminate render-blocking resources (defer non-critical CSS/JS), serve images in WebP, properly size images (don't serve 2000px images displayed at 200px), reduce unused JavaScript, enable text compression (Gzip/Brotli). With Connect Quest LiteSpeed hosting: enable LSCWP plugin, run image optimization, enable CSS/JS minification — typically improves PSI score by 20-40 points. Monitor monthly at connectquest.co.in.